Harrow



(No Model.)

G. E. GEDGE. HARROW.

, PatentedvApr. 19, 1898.

Nrrn STATES A'IEN'I Erica.

GEORGE E. GEDGE, OF SPRINGFIELD, OHIO.

HARROW.

SPECIFICATION forming part of Letters Patent No. 602,538, dated April19, 1898.

Application filed August 27, 1897. Serial No. 6%,684. (No model.)

To ctZZ whom it ntctg concern.-

Be it known that I, GEORGE E. GEDGE, a citizen of the UnitedStates,residing at Springfield, in the county of Clark and State ofOhio, have invented certain new and useful Improvements in Harrows, ofwhich the following is a specification.

My invention relates to improvements in tubular-frame barrows; and itrelates particularly to means for holding the harrowteeth so that thesame may be adjusted in the frame.

The invention consist-s in the constructions and combinations of partshereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a plan view of a harrowembodying my invention. Fig. 2 is a detail view in perspective,illustrating the means for holding the barrow-teeth. Fig. 3 is a detailView in section, showing the adjustable tooth-holding device.

Like parts are represented by similar letters of reference in theseveral views.

In constructing my barrow-frame I use tubular bars a, connected togetherby any suitable cross-bars a in the usual manner. The harrow-teeth b aremounted in the tubular bars a, the bars being drilled or punched forthis purpose to receive the teeth which extend through the bars.Forholding the teeth firmly in their positions, and also to providemeans for adjusting the teeth, I employ a clamping device 0, which isprovided at the top and bottom with openings 0' and 0 formed of the sameshape as the harrow-tooth, which is preferably square. The openings 0and 0 however, are preferably slightly larger than the cross-section ofthe harrow-tooth b, and the sides of the openings are arranged at anangle to the plane of the clip or clamping device. This clip or clampingdevice 0 is provided with a bolt 0 which passes through the upper andlower portions thereof and is adapted to draw said portions together.The upper and lower portions of the clamping device between the bolt 0and the openings are formed on their inside to conform to the shape ofthe tubular bar a, so that as'the bolt is tightened to draw the upperand lower portions together they draw around the pipe. The result ofthis construction is that if the tooth b is extending through theopenings of the clamping device and through the corre sponding openingin the tubular bar the tube will be clamped between one side of theopening in the bar and the opposite sides of the openings in theclamping device.

In Fig. 2 I have shown the upper and lower portions of the clampingdevice formed in one piece with a connecting-strip 0 In thisconstruction the clamping device is formed of malleable metal, so thatthe bar 0 will yield to permit the clamping parts to assume the properclamping position.

In Fig. 3 I have shown the upper and lower parts of the clamping devicedisconnected except as they are connected by the bolt 0 the part 0 beingshown in dotted lines to indicate its position when it is employed. Ineither case, however, the result is the same, the clamping parts beingadapted to fit one side of the tubular bar only, and as they are drawntogether they have a tendency to move around the bar in oppositedirections and thus clamp the barrow-tooth.

It is obvtous that by this construction the barrow-tooth may be clampedin any position of adjustment. The tooth may be of any shape incross-section, either round, square, or polygonal, and of a uniform sizethrough out the adjustable portion of its length. By this arrangementthe openings through the tubular bars may be formed to conform to theshape of the teeth, or they may be simply round holes drilled or punchedin the bar, as the shape of the clamping device will not only hold thetooth against longitudinal movement through the bar, but it will alsoprevent the rotation of the same in the bar.

Having thus described my invention, I claim 1. The combination with acontinuous walled tubular bar, of a harrow-tooth extending through thesame, of a clamping device having portions above and below said bar andfitting around said tooth, said portions being adapted to substantiallyconform to and fit one side of said bar, and means for drawing saidportions of the clamping device against said tooth, substantially asdescribed.

2. A harrow formed with tubular bars, harrow-teeth extending throughsaid bars,clamping devices for said barrow-teeth consisting of upperandlower portions formed with openings therein through which saidbarrow-teeth are adapted to pass, the respective portions of saidclamping device being adapted to substantially conform to one side ofsaid bar, and means for drawing said upper and lower portions togetheron the side to which they conform to said bar, substantially asspecified.

3. The combination with a tubular bar, a tooth projecting through thesame, a clamping device having a portion above and aportion below saidbar and connected at one side bya yielding connection and on theopposite side by an adjustable bolt, said portions having parts whichextend around and are adapted to substantially conform to one side ofsaid bar,said portions having openings corresponding to said tooth, saidportions being adapted to be clamped against said tooth substantially asspecified.

4. The combination with the continuous walled bar a, barrow-tooth b,said tooth being adapted to pass through openings in said bar, clampingdevice 0 having openings for said tooth, the adjustable bolt 0 and aconnecting-piece 0 substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand this 23d day of August,A. D. 1897.

GEORGE E. GEDGE.

W'itnesses:

CHAs. I. WELoH, G. M. GRIDLEY.

